Valve



Patented Deo. 16,1924. i e

UNITED NSTATES PATENT OFFICE. i

HANS E. DANSTRUP, 0F BROOKLYN. NEW YORK. ASSIGNOR OF ONE-HALF TO JOSEPH HARRISON. OF BROOKLYN, NEW YORK. i

VALVE.

original application filed october 11, 1922, serial No. 593,845. Divided and this application mod April 11,

1923.l serial No. 631,309. i

To ZZ whom t may concern:

Be it known that I, HANS EDANsTuUr, a citizen of the United States.- and resident. of the borough of Brooklyn. in the county of Brooklyn and State of New York. have in vented certain new and useful Improvements in Valves, of which the following is a speri lir'ation. i

This invention relates to revoluble valves for use in the transferenceof fluids to and from a cylinder as under the operation of a piston therein during the strokes thereof in opposite directions, the present application being a division\of my earlier application for patent, Serial No. 593,845, tiled October 11, 1922.

1n the drawing:

Figure 1 is a partial horizontal sectional view of a pump with whichis embodied my improved valve.

Fig. 2 is a section taken. on the line 2-2 of 1, and

.Fig 3 1s a section taken through the valve onthe line 3-3 of Fig'. 1.

Mv improved'valve is here represented asA incllidedin thel same pump organism as that forming the subject. matter of my said earlier application, thls showing being given merely by wayof exemplifying one of the uses to which the valve may be put.

In said example let r1 indicate a pump cylinder in which is provided a piston 2 having a piston rod 7.

The cylinder is provided with the ports 10. 11 at one side thereof, these ports being` disposed respectively near its opposite ends, this ported side of the cylinder being enlarged. as at 12` the enlargement'having a Hat outer surface 13. l

An externally threaded annulus 14, having an inward flange 15, is screwed into a recess formed for its reception in the centre ofenlargement 12, and a spindle 16, which has a head 17, engages thereby with the flange 15, and is extended outwardly from the an nulus.

This spindle revoluoly carries a valve 18 in the form of a flat disk, whose periphery is provided with gea'rteeth 19, which mesh with an intermediary gear 20, here shown broken away, and intended to form part of the piston operating mechanism.

A valve head 23, in the form of a. flat plate is disposed at the outer side of valve 18,and is provided with a central orifice for the reseption of spindle 16.

IVVhilethe revoluble member 18 hasA been designated as'the valve, actually the valve organism in this example extends also through the member referred to as the enlargement 12. and the member referred to as the valve `head23, as will become apparent 'in the .following description of these elements of the structure. But it is proper to state, at this juncture. that the fixed 1nember 23 bears with elastic pressure against the revoluble `member 18, which similarly engages the opposed surface 13 of Xed member 12. This engagement` is Vshown as Aetl'ect'ed by means of four bolts 24 which, respectively `engage the lugs 25 extended equidistantly It will be appreciated that by turning the nuts 27 the tension of `springs 28 may be adjusted so as to permit proper freedom of rotation for member 18.

Packing rings 29 are placed in opposed grooves in the members 12, 18 and l23 4to rendertheir working surfaces liquid tight. Also the spindle 16 is provided with an adjustment nut 30, and a spring 30a lies between said nut and member 23 to holdthe spindle suitably adjusted. while also exerting tension centrally. with respect to the assemblage of the valve elements.

Byreference to Fig. 3 it will be noted that I the valve element 18 is provided withan arcuate slot or clearance 31, and an opposite, arcuate passage 32, of equal extent. The end Walls 33 of the slot 31 are of convex form, and likewise the ends 34 of the passage 32 have convex form.

There is also a transverse, arcuate passage 36 in element 18 which communicates respectively with the opposite ends of passage.32.

Before relatingthe functions of the slot 31 and passages 32, 36, it will be proper to describe the passage in member 23 which coacts therewith."R Therefore, attention is directed to Fig. 2 in which will appear the outer, arcuate passage 38 and the inner, opposed arcuate passage 39.

The passage 38, atrits ends, communicates respectively with the ports 40. 4:1; and the passage 39, at its ends communicates respectively with the ports 42, 43.

The port 40 is in fixed alignment with the port 10 in the cylinder side, and the port 41 is in alignment With the port 11, which is also located in the cylinder side.

The operation of the device Will be ren' dered clear by referenceto Fig. 1, in which piston 2 is shown as making an outstroke, during which fluid is drawn into the cylinder, behind the piston, through pipe A, passa e 38, port 40, arcuate slot 31, and port t the same time fluid is being expelled from cylinder l, inadvance of piston 2, through port l1, arcuate passage 32, transverse passage 36,- passage 39, port 42 and out through pipe B. p

The operation continues all through vthe out-stroke of the piston. On the return or in-strokeof the piston, or during the second vhalf of the revolution of valve 18, Whensuction pull will be exerted at the forward face of the piston, the inlet will also be through pipe A, but its path Will follow fromport 41, through arcuate slot 3l and port 11; and

at the same time fluid will be delivered from the other side of the piston, through port 10, arcuate passage 32, transverse passage 36, arcuate passage 39, and out through pipe B.

In they foregoing operations it 1s assumed that the crank shaft, and consequently also the valve 18 are rotated in one direction. But if the rotation of the crank shaft and valve 18 be reversed, then the inflow to thc cylinder will be through pipe l and the outflow from the cylinder through pipe A, as will be apparent.

Variations within the spirit and scope ot' passa-ge which is opposed to and separatey from said slot, and said valve having on the same side as the arcuate passage a transverse passage which communicates with said arcuate passage near the ends of the latter.

Signed at the borough of Manhattan, in the city, county and State of Nev,1 York, this 6th day of April A. D. 1923.

HANS E. DANSTRUP. 

